Welcome to Dragon Door

At Dragon Door, we don’t just sell fitness tools — we build resilient, powerful humans.

Born from a deep connection to elite military, law enforcement, martial artists, and performance coaches, Dragon Door has spent decades developing a reputation for one thing: results. Dragon Door is built for those who demand more — more strength, more resilience, more results. Whether you're looking to forge elite-level power, stay fighting-fit for life, or rebuild your body from the ground up, you're in the right place.

We launched the modern kettlebell revolution in 2001, and our mission hasn’t changed: to give you access to the most effective, no-nonsense training methods on the planet. No fluff. No gimmicks. Just proven tools for building strength that lasts a lifetime.

Behind it all is a community, thousands strong, of dedicated men and women across 43 countries and every U.S. state. People who value efficiency, grit, and evidence-based performance. People like you.

As the founder, I’ve personally practiced tai chi since 1975 and spent my life immersed in the best practices for physical cultivation. Since starting Dragon Door in 1991, I’ve made it my mission to share these practices with people who are ready to take control of their health, performance, and longevity.

Every product and resource you find here has been hand-selected to help you live a stronger, more capable, and more vibrant life. I stand behind it all, and so does our one-year, 100% money-back guarantee.

Welcome to the community.

– John Du Cane

Founder & CEO, Dragon Door

What Real Users of The IsoMax Have to Say

“Having been a Strength and Conditioning Coach for 40 years (33 years at the college level, 7 years at the high school level), I have seen a LOT of devices come and go. The IsoMax impresses me so much that I would definitely incorporate it into my program if I were starting all over again in my career. It'll defin… Read More

Rod Cole

Stephenville, TX

“Been working out since 1975. The Isomax has taken center stage. The combination of convenient, very effective isometrics and seeing the amount of force generated on each rep is phenomenal. Dragon Door's innovations are a godsend. I'm 70 and the strongest I have ever been.”

Bob Lorenz

Vernon, NY

“I have been able to gain more muscle mass and increased strength with the Isomax than with any free weights or weight machine. I am in my mid 40s and have been lifting weights since my late teenage years, but nothing I have tried compares to the Isomax!”

Mike Little

Lansing, NC

Excellent Isometric Trainer. Additional training technique to weights. Exercises your muscles differently than normal weights. For those people like me who have never trained isometrically they stimulate your muscles without risk of injury. Isometrics strengthens muscle strength / endurance in different ways to w… Read More

Tommy Cusack

London, England

I love my IsoMax. I am 55, I had the normal aches and pains you would expect for someone my age. Back, knee and tricep tendonitis. I have been using the IsoMax for 4 months, my aches and pains have faded to nothing. My blood pressure has also improved and i have effortlessly gained muscle. And i am only using it … Read More

Stu W.

Long Island, NY

Kettlebell Get-ups at an RKC workshop with Andrea Du Cane instructing

RKC Big Six Workout

big six Andrea Du Cane Jan 18, 2024

William Sturgeon, RKC Team Leader performing a kettlebell swing

The Kettlebell Swing & Low Back Pain

Category_Kettlebell Training William Sturgeon Oct 29, 2023

Better Balance with Kettlebell Exercise - article lead image with multiple cropped examples of the exercises described in the article.

Key Kettlebell Exercises To Help You Create Better Balance

balance training William Sturgeon Feb 20, 2023

Best Kettlebell on the Market

The feel and weight distribution of this kettlebell is the best on the market.

Love RKC kettlebell

I'm not sure if I got a one off but the new finish is inferior to my older RKC Kettlebells. The others have a nice matte finish where my newest one has a shiny finish and looks like a cheaper version. Still a good bell, well balanced and probably still better than most. Got a 7/10 for that reason. By the way, I'm not a weekend warrior, I'm in the fitness industry: trainer for 15 years. I may know something.

A product I love to snatch

I'm happy that I've found Dragon Door kettlebells.But it took a fair amount of searching.Started with trips to a local sports/fitness rquipent store, then Target.Nothing at all looked convincing.My first kettlebells were bought yers ago locally and are made with epoxy coating.That's just plain wrong. How could someone come up with such an idea? It hardly makes any sense from a ruggedness/longevity of the product prospective.But that's what was available at the time.This time I put in more effort into my research.And I would like to thank the person who wrote a very thorough review of the best kettlebells out there.I decided to go with simply the best!

Repeat customer

I keep coming back for more and can't imagine buying kettlebells anywhere else!

Unmatched quality

I have used many different brands of kettlebells and will only buy RKC. I have a pair of the 24s that are used almost everyday, they will humble you and empower you. Handles are the perfect size and are breaking in nicely. Another great product from RKC.